Oilpan: simplify quota storage callbacks objects.

Source/modules/quota/StorageQuotaCallbacksImpl.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 #include "platform/StorageQuotaCallbacks.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class StorageQuotaCallbacksImpl final : public StorageQuotaCallbacks {
     WTF_MAKE_NONCOPYABLE(StorageQuotaCallbacksImpl);
 public:
-    static PassOwnPtrWillBeRawPtr<StorageQuotaCallbacksImpl> create(PassRefPtr<ScriptPromiseResolver> resolver)
+    static StorageQuotaCallbacksImpl* create(PassRefPtr<ScriptPromiseResolver> resolver)
     {
-        return adoptPtrWillBeNoop(new StorageQuotaCallbacksImpl(resolver));
+        return new StorageQuotaCallbacksImpl(resolver);
     }
 
     virtual ~StorageQuotaCallbacksImpl();
 
     virtual void didQueryStorageUsageAndQuota(unsigned long long usageInBytes, unsigned long long quotaInBytes) override;
     virtual void didGrantStorageQuota(unsigned long long usageInBytes, unsigned long long grantedQuotaInBytes) override;
     virtual void didFail(WebStorageQuotaError) override;
 
 private:
-    StorageQuotaCallbacksImpl(PassRefPtr<ScriptPromiseResolver>);
+    explicit StorageQuotaCallbacksImpl(PassRefPtr<ScriptPromiseResolver>);
 
     RefPtr<ScriptPromiseResolver> m_resolver;
 };
 
 } // namespace blink
 
 #endif // StorageQuotaCallbacksImpl_h